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| //===-- RegisterContextDarwin_x86_64.h --------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef liblldb_RegisterContextDarwin_x86_64_h_
#define liblldb_RegisterContextDarwin_x86_64_h_
#include "lldb/Target/RegisterContext.h"
#include "lldb/lldb-private.h"
class RegisterContextDarwin_x86_64 : public lldb_private::RegisterContext {
public:
RegisterContextDarwin_x86_64(lldb_private::Thread &thread,
uint32_t concrete_frame_idx);
~RegisterContextDarwin_x86_64() override;
void InvalidateAllRegisters() override;
size_t GetRegisterCount() override;
const lldb_private::RegisterInfo *GetRegisterInfoAtIndex(size_t reg) override;
size_t GetRegisterSetCount() override;
const lldb_private::RegisterSet *GetRegisterSet(size_t set) override;
bool ReadRegister(const lldb_private::RegisterInfo *reg_info,
lldb_private::RegisterValue &value) override;
bool WriteRegister(const lldb_private::RegisterInfo *reg_info,
const lldb_private::RegisterValue &value) override;
bool ReadAllRegisterValues(lldb::DataBufferSP &data_sp) override;
bool WriteAllRegisterValues(const lldb::DataBufferSP &data_sp) override;
uint32_t ConvertRegisterKindToRegisterNumber(lldb::RegisterKind kind,
uint32_t num) override;
bool HardwareSingleStep(bool enable) override;
struct GPR {
uint64_t rax;
uint64_t rbx;
uint64_t rcx;
uint64_t rdx;
uint64_t rdi;
uint64_t rsi;
uint64_t rbp;
uint64_t rsp;
uint64_t r8;
uint64_t r9;
uint64_t r10;
uint64_t r11;
uint64_t r12;
uint64_t r13;
uint64_t r14;
uint64_t r15;
uint64_t rip;
uint64_t rflags;
uint64_t cs;
uint64_t fs;
uint64_t gs;
};
struct MMSReg {
uint8_t bytes[10];
uint8_t pad[6];
};
struct XMMReg {
uint8_t bytes[16];
};
struct FPU {
uint32_t pad[2];
uint16_t fcw; // "fctrl"
uint16_t fsw; // "fstat"
uint8_t ftw; // "ftag"
uint8_t pad1;
uint16_t fop; // "fop"
uint32_t ip; // "fioff"
uint16_t cs; // "fiseg"
uint16_t pad2;
uint32_t dp; // "fooff"
uint16_t ds; // "foseg"
uint16_t pad3;
uint32_t mxcsr;
uint32_t mxcsrmask;
MMSReg stmm[8];
XMMReg xmm[16];
uint8_t pad4[6 * 16];
int pad5;
};
struct EXC {
uint32_t trapno;
uint32_t err;
uint64_t faultvaddr;
};
protected:
enum { GPRRegSet = 4, FPURegSet = 5, EXCRegSet = 6 };
enum {
GPRWordCount = sizeof(GPR) / sizeof(uint32_t),
FPUWordCount = sizeof(FPU) / sizeof(uint32_t),
EXCWordCount = sizeof(EXC) / sizeof(uint32_t)
};
enum { Read = 0, Write = 1, kNumErrors = 2 };
GPR gpr;
FPU fpu;
EXC exc;
int gpr_errs[2]; // Read/Write errors
int fpu_errs[2]; // Read/Write errors
int exc_errs[2]; // Read/Write errors
void InvalidateAllRegisterStates() {
SetError(GPRRegSet, Read, -1);
SetError(FPURegSet, Read, -1);
SetError(EXCRegSet, Read, -1);
}
int GetError(int flavor, uint32_t err_idx) const {
if (err_idx < kNumErrors) {
switch (flavor) {
// When getting all errors, just OR all values together to see if
// we got any kind of error.
case GPRRegSet:
return gpr_errs[err_idx];
case FPURegSet:
return fpu_errs[err_idx];
case EXCRegSet:
return exc_errs[err_idx];
default:
break;
}
}
return -1;
}
bool SetError(int flavor, uint32_t err_idx, int err) {
if (err_idx < kNumErrors) {
switch (flavor) {
case GPRRegSet:
gpr_errs[err_idx] = err;
return true;
case FPURegSet:
fpu_errs[err_idx] = err;
return true;
case EXCRegSet:
exc_errs[err_idx] = err;
return true;
default:
break;
}
}
return false;
}
bool RegisterSetIsCached(int set) const { return GetError(set, Read) == 0; }
void LogGPR(lldb_private::Log *log, const char *format, ...);
int ReadGPR(bool force);
int ReadFPU(bool force);
int ReadEXC(bool force);
int WriteGPR();
int WriteFPU();
int WriteEXC();
// Subclasses override these to do the actual reading.
virtual int DoReadGPR(lldb::tid_t tid, int flavor, GPR &gpr) = 0;
virtual int DoReadFPU(lldb::tid_t tid, int flavor, FPU &fpu) = 0;
virtual int DoReadEXC(lldb::tid_t tid, int flavor, EXC &exc) = 0;
virtual int DoWriteGPR(lldb::tid_t tid, int flavor, const GPR &gpr) = 0;
virtual int DoWriteFPU(lldb::tid_t tid, int flavor, const FPU &fpu) = 0;
virtual int DoWriteEXC(lldb::tid_t tid, int flavor, const EXC &exc) = 0;
int ReadRegisterSet(uint32_t set, bool force);
int WriteRegisterSet(uint32_t set);
static uint32_t GetRegisterNumber(uint32_t reg_kind, uint32_t reg_num);
static int GetSetForNativeRegNum(int reg_num);
static size_t GetRegisterInfosCount();
static const lldb_private::RegisterInfo *GetRegisterInfos();
};
#endif // liblldb_RegisterContextDarwin_x86_64_h_
|